New here.

[GrimsterGMC]

I don't suppose the pan has been pushed up and is getting scrapped by the crank? Would be a simple fix (the type we like)

 

[AlaRado]

I don't suppose the pan has been pushed up and is getting scrapped by the crank? Would be a simple fix (the type we like)

When I pulled the engine from the 59 truck, I had to pull it across a dirt yard to a trailer to load. At one point it did fall from the cherry picker. I didn’t see any visible damage so I wasn’t worried about it. I will be draining the oil and removing oil pan very soon and will post update. Thanks for your input! I hope it’s something just that simple!

 

[movietvet]

Welcome to the forum from Oregon

 

[jaybee]

I agree you should pull the pan just to be on the safe side. It's the sort of thing that may not be a big deal now but seldom gets better if not addressed.

Welcome, btw, and my advice is to get it running as soon as you can and as you keep working on it, do your projects in such a way that you never have to keep it off the road longer than necessary. Many a project has met its end when someone with good intentions and great plans took a vehicle apart and never managed to get it back together again. They're usually a lot more fun when you can drive them.

 

[AlaRado]

Good morning all. I still haven’t pulled the oil pan to find the issue within the engine bottom end just yet. I do have an update about the truck though. My son and I have been doing this project together and from pulling it from the 1951 custom truck it was in to installing the engine/transmission in my 1994 c1500, running fuel lines, running exhaust, and the wire nightmare that was successfully completed, we have a truck that has power to the lights, horn, and cranks and even moves forward and backwards! Thanks to everyone here and I’m especially grateful for those of you who’ve contributed directly with the links to wiring harnesses and information! Thank you! I will drop this oil pan eventually, but I’m just enjoying this small victory of coming from nothing to something. And so much more to come!

 

[AlaRado]

Greetings AlaRado,

Welcome to the GMT400 forum, where we all share your good taste in
this generation of the General's trucks & SUVs.

In order to shed a little light on your illumination woes, I fired up the '94
Driveability, Emissions, & Electrical Diagnosis manual and located the
Head Lamp wiring diagram, which is where we would start theorizing on
what's malfunctioning on your truck based upon the symptoms:

You must be registered for see images attach

(NOTE: Tail lights, turn signals, and marker lamps all on neighboring pages.)

Of course the above is drawn at the electrical abstraction layer. Fortunately the manuals
also include the wiring harness physical layout as originally installed on the assembly line:

You must be registered for see images attach

(NOTE: Important Head Lamp grounds circled. Bad grounds can create a real diva of a daily driver.)

I've also attached the first page of the non working Head lamp troubleshooting flows, just
to give you a taste of what's waiting for you in the FSMs. (Factory Service Manuals) They
don't cover all possible problems, but I find they do help get your head into a productive
troubleshooting space.

And since it looks like you are putting back together something that someone else took apart,
I included the first page of the Lighting Connector listing. I find this helpful when trying
to identify a particular branch of a (new to me) wiring harness.




1) I'd like to echo what other members have already mentioned about downloading a set of
the Factory Service Manuals for your '94. By doing so, when you ask a question based out
of the FSM, us remote dudes scattered all over the globe can literally be reading from the
same page. If you haven't already done so, follow this link and take a lot of guesswork out
of your project: ('88+ GMT400 FSMs) Note: This is where I got the .pdf files I used above.

2) Consider turning this into a dedicated build thread for your truck. This way when you ask
a new troubleshooting question we can review the thread and have the proper context to
help frame the most suitable response. (As opposed to starting a new thread for every issue,
and we have to pretty much start over with what we're working on.) Here's a good example of
what I'm talking about: (Komet's K2500 Revival) Possibly a moderator could move this thread
to where these threads live?



Your actions support your statement. Anyone who is willing to put in the time & effort to
divert one of these machines from the scrapyard and back onto the road as a reliable daily
driver has instant cred with lots of folks in here. Keep fighting the good fight, and if any
more questions come up just post them in here and we'll give it our best.

Again, welcome to the forum, and nice to cross paths with you.

Cheers --

The junction block on the firewall was missing! I pulled one from junkyard and even wired in the underhood light as well. All the wires are going to their respective locations and voila I have power to all accessories! Thanks so much for your help!!!

 

[Road Trip]

The junction block on the firewall was missing! I pulled one from junkyard and even wired in the underhood light as well. All the wires are going to their respective locations and voila I have power to all accessories! Thanks so much for your help!!!

Yes!

Good on you for coming back and sharing what you found and how you fixed it.

BTW, I genuinely enjoy it when someone like yourself (who obviously won't take no
for an answer from a piece of machinery) introduces themselves to this forum,
asks a question, posts a few pics, gets some remote guidance...and then
*acts* on it, seeing it all the way through to completion & makes it happen.

And then takes the time to come back and close the loop for others researching
similar issues. And also demonstrating to them that it's quite possible to keep
these old GMT400s running. Even if you buy someone else's stalled project for
the right price and take on the challenge of figuring out all that they didn't understand. (!)

And to top it all off this is a father-son project. That's too cool. Quality life lessons right there.

Well played, sir.

 

[AlaRado]

Yes!

Good on you for coming back and sharing what you found and how you fixed it.

BTW, I genuinely enjoy it when someone like yourself (who obviously won't take no
for an answer from a piece of machinery) introduces themselves to this forum,
asks a question, posts a few pics, gets some remote guidance...and then
*acts* on it, seeing it all the way through to completion & makes it happen.

And then takes the time to come back and close the loop for others researching
similar issues. And also demonstrating to them that it's quite possible to keep
these old GMT400s running. Even if you buy someone else's stalled project for
the right price and take on the challenge of figuring out all that they didn't understand. (!)

And to top it all off this is a father-son project. That's too cool. Quality life lessons right there.

Well played, sir.

Thank you sir! I’ll be back as I have time to do more!

 

[Cadillacmak]

Thank you sir! I’ll be back as I have time to do more!

Nice truck to build with your son! Keep coming back and gifting us with pictures please.

 

[AlaRado]

Nice truck to build with your son! Keep coming back and gifting us with pictures please.

Thank you! It’s come a long way!